Singer Lily Allen is known for her unique, bohemian style—no princess-y ballgown for this Brit. Maybe something with a throwback feel, as Lily's often spotted wearing vintage-inspired attire. Our verdict? She'd totally rock this 1960s-inspired Randi Rahm minidress. It has just the right amount of sparkle, but its daring hemline makes it perfect for a rock star bride. To see our picks for Jessica Simpson, Reese Witherspoon, and Natalie Portman's wedding dress, check out this slideshow, and don't forget to visit our dress gallery to find your wedding gown.—Kim Forrest